USPTO Patents Application 09941666

Application No. 09/941,666
Response dated April 19, 2004

Amendments to the Claims :

This listing of claims replaces all prior versions and listings of claims in the application.

Listing of Claims : j

Claim 1 (canceled)

Claim 2 (previously presented): An ink jet recording sheet according to Claim 20,
wherein a silanol-modified polyvinyl alcohol is contained as the binder.

Claim 3 (previously presented): An ink jet recording sheet according to Claim 20,
wherein the water-soluble cationic organic material is a dicyandiamide condensate.

Claim 4 (previously presented): An ink jet recording sheet according to Claim 20,
wherein the ink receiving layer contains a hydrate aluminum oxide.

Claim 5 (previously presented): An ink jet recording sheet according to Claim 20,
wherein the ink receiving layer contains a water-soluble aluminum salt.

Claim 6 (withdrawn): An ink jet recording sheet comprising an ink receiving layer
provided on a substrate, said ink receiving layer being formed by preparing a layer containing a
porous filler and a binder by coating and drying on the substrate and thereafter allowing the layer
to be impregnated with a water-soluble cationic organic material, wherein

said layer containing the porous filler and the binder is formed using a coating liquid
having a pH of 4 or less;

2

Application No. 09/941,666
Response dated April 19, 2004

the amount of the water-soluble cationic organic material contained in said layer
containing the porous filler and the binder after the layer is impregnated with the water-soluble
cationic organic material is 2% by weight or less in terms of solid ratio to the layer;

said filler is contained in an amount of 40 to 80% by weight in the total solid of the ink
receiving layer; and

said layer is impregnated with the water-soluble cationic organic material such that the
water-soluble cationic organic material is contained in a larger amount in the vicinity of the
surface of the ink receiving layer.

Claim 7 (withdrawn): An ink jet recording sheet according to Claim 6, wherein a silanol-
modified polyvinyl alcohol is contained as the binder.

Claim 8 (withdrawn): An ink jet recording sheet according to Claim 6, wherein the water-
soluble cationic organic material with which said layer is impregnated is a dicyandiamide
condensate.

Claim 9 (withdrawn): An ink jet receiving sheet according to Claim 6, wherein the ink
receiving layer contains a hydrate aluminum oxide.

Claim 10 (withdrawn): An ink jet recording sheet according to Claim 6, wherein the ink
receiving layer contains a water-soluble aluminum salt.

Claim 11 (withdrawn): An ink jet recording sheet comprising an ink receiving layer
provided on a substrate, said ink receiving layer being formed by preparing a layer containing a

3

Application No. 09/941,666
Response dated April 19, 2004

porous filler and a binder by coating and drying on the substrate and thereafter allowing the layer
to be impregnated with a water-soluble cationic organic material, wherein

said porous filler is silica, which is prepared by mixing silica having an average particle
diameter of 5 mm or less which is measured using a coulter counter method and an oil
absorptiveness of 200 to 230 ml/100 g with silica having a larger average diameter than the
former silica in a ratio by weight of 100:0 to 50:50; and

said filler is contained in an amount of 40 to 80% by weight in the total solid of the ink
receiving layer.

Claim 12 (withdrawn): An ink jet recording sheet according to Claim 11, wherein the
layer containing the porous filler and the binder is formed using a coating liquid having a pH of 4
or less and the amount of the water-soluble organic material contained in the layer containing the
porous filler and the binder is 2% by weight or less in terms of solid ratio to the layer.

Claim 13 (withdrawn): An ink jet recording sheet according to Claim 11, wherein the
amount of the water-soluble cationic organic material contained in the layer containing the
porous filler and the binder before the layer is impregnated with the water-soluble cationic
organic material is 2% by weight or less in terms of solid ratio to the layer.

Claim 14 (withdrawn): An ink jet recording sheet according to Claim 11, wherein said
layer is impregnated with the water-soluble cationic organic material such that the water-soluble
cationic organic material is contained in a larger amount in the vicinity of the surface of the ink
receiving layer.

4

Appl ication No. 09/94 1 ,666
Response dated April 19, 2004

Claim 15 (withdrawn): An ink jet recording sheet according to Claim 14, wherein the
amount of the water-soluble cationic organic material contained in the layer containing the
porous filler and the binder before the layer is impregnated with the water-soluble cationic
organic material is 2% by weight or less in terms of solid ratio to the layer.

Claim 16 (withdrawn); An ink jet recording sheet according to Claim 11, wherein a
silanol-

modified polyvinyl alcohol is contained as the binder.

Claim 17 (withdrawn): An ink jet recording sheet according to Claim 11, wherein the
water-soluble cationic organic material with which said layer is impregnated is a dicyandiamide
condensate.

Claim 18 (withdrawn): An ink jet recording sheet according to Claim 11, wherein the ink
receiving layer contains a hydrate aluminum oxide.

Claim 19 (withdrawn): An ink jet recording sheet according to Claim 11, wherein the ink
receiving layer contains a water-soluble aluminum salt.

Claim 20 (currently amended): An ink jet recording sheet, comprising
a substrate;

a coating provided on the substrate, wherein the coating is formed by coating the
substrate with a coating liquid containing a porous filler and a binder, the coating liquid having a
pH of 4 or less, followed by drying the coating liquid; and

a water-soluble cationic organic material impregnated into the coating,

5

Application No. 09/941,666
Response dated April 19, 2004

wherein the coating impregnated with the water-soluble cationic organic material forms
an ink receiving layer, wherein the water-soluble cationic organic material is not present in the
binder, wherein the water-soluble cationic organic material is contain e d impregnated in the ink
receiving layer in an amount of 1.5 to 2.0% [[2%]] by weight or less , in terms of solid ratio of
the ink receiving layer; and wherein the filler is contained in an amount of 40 to 80% by weight,
in terms of solid ratio of the ink receiving layer.

6